Year	Number
1996	0.507538914680481
1998	0.564976453781128
2000	0.022758649662137
2002	0.40204930305481
2003	-0.673140525817871
2004	-0.163161784410477
2005	-0.43626394867897
2006	-0.360273152589798
2007	-1.0954577922821
2008	-1.10721170902252
2009	-0.765267729759216
2010	-0.562939286231995
2011	-0.552736103534698
2012	-0.452308028936386
2013	-0.256929188966751
2014	-0.186910167336464
2015	-0.244471609592438
2016	0.0220019221305847
2017	0.0224073994904757
2018	-0.361675262451172
2019	-0.176833510398865
2020	-0.28740406036377
2021	-0.228033617138863
2022	-0.230514869093895